Sewing-machine.



A. F. FIFIELD.

, SEWING MACHINE.

APPLICATION FILED MAY 3|, 1916.

1,226,963. Patented May 22, 1917.

1 2 SHEETSSHEET I.

I' mllllllnllnmum Mmmnmmm' INVENTOR BY @Wm ATTORNEY A. F. FIFIELD.

SEWING MACHINE.

AFPLICATlON FILED MAY 31. I916.

1,226,963. Pa-tent egl lgssllii 1317.

WITNESSj /NVNTOR Wig 6% m {M '20 means of a, -agonalqoggm gbeen impart/c a ton sewing ma to impart i0 movementsto the workclamp througih dependent lines of connecwork-clam in mu;

ALBERT 1 11mm), on nnwank,

, rnc'runme-oomrants CORPORATION or nnwmnsnr, y

To all whom it may concern: r Be :it known that I,:\LBERT F. FIFIELD, a cituen of the United States, Newark, in the county and useful Improvements in Sewing-Machines, of which the followin is a specification, reference being had t erein to the accompanyin drawings.

This invention relates fox-producing groupa of tacking stitches and more particularly operating mechanism for machines it is customary single-thread but- In button sewing tions" which, ect'the tuallyltransversgfidirections and, y actuonall disposed. ups of tacking stitches; y ent mafii J. Sullivan, 'No, 777,564,

machinethe'm lengthwise of; "the machine-bedma issued cemberl 13,

suitably, designed cam-tracks, d1-

rnovements have common to the work-clamp for the ose of shiftinga.

tions to receive the well-k110wn-d1ag'- pin The at 1904, discloses: a .wellknown type ofloelestitch button dying machine having awork-holder actuated m the manner abov e described. In the Sullivan "vements of the work-holder be susmoving a contact-bloc to the oi the lower arm of ammo-mating where it me.

pended b upper en rock-lever,

in position coincident'jwith the fulcru-ni'oi the rock-lever,'thef movements thus rendered-idle. In this 40 i isinot articularly important, as far as the ,which .direction the WOIk' is shifted.

of which are osition oi, adjustment the work-holder wil have merely a lateral-jogging movement to position the work for reception of a single group of fastening stitches. disposed transversely of the machine-bed.

In a locksuch as disclosed in the titch rammin machine Sullivan patent it In chain-stitch machines, however, it is wellkuown that as-the. button and fabric are vibrated laterally of the needlethere is a stitcharming operation is: concerned,

, tendency to effect a distortioh of the loop of thread drawn out by. the looper, whereby residing at of Essex. and- State of Ne\v1.]ersey, have invented certain new toisewing machines to. the work-clamp connections simultaneously by four-hole button into a be securely hel ed claims.

snwme-macnmn' one; side the loop is brought to to be caught; and broken by distended loop that the needle villdescend on the roper side of said loop and present a new 00p to be seized by the looperbealt.

NEW JEnsEYQAssIeNon 'ro "IHYEY smonnnm Speciilcation cf Letter s-Patent. 'Pa t t dM zz, l. g plicationflledllaytl,19181 SeriaINo IOO fiM. a

w p the beakof they looper, and such machines,are'commonly l provlded-wlthi devices for so,,po s1t1oning;the

and carried through the previously distended -loo tendi g lOngitudinall of the bed-plate, and fitted Withwork-hol found, when the -mechamsm is above-described to sew on'two-liole buttons,

that the jogging" movements are imparted to the work 1n movements of the looper-beak and, as-a result, at every of the distended loop lie directly, in the In single-thread sewing machines having, a .er which extends about an axis 63-,

er mechanisnrsuch as disclosed in the. Sullivan patent it has been adjusted as i line with the loop-seizing",

alternate stitch the two limbs i path of the descending needle and one or I the other of said limbs is apt to beca'ught on the needle-point and broken; The needle descend between the" limbs 80 essential to is also likelyto of the distended loop atone side of said loop as is the formation of enchained loops.

instead of descending One of the objects of the invention? therefore, to provide a'simplified and improved button sewing machine of the singlethread type which is adapted to sew p on two-.- or four-hole buttons with equal facility. 1" 1 Another object of the invention isto im prove the type of clam .anlsm disclosed in, the that it may beuised operating mech- -ing either 'twoor four-hole buttons;

Another object vide a train oi work-holder operatin con-3f ulhvan' patent in connection with, "singlethreadsewing machines for attach of the invention "isto pronections with'animproved me'ans for isconnecting it from its actuating means.v

A further object of the invention is, to' "J a guide which rovide a fixed stop havin isadapted-topcoiiperate wit and determine the path of movement of an element of said disconnecting means when-said: element is shifted from-operative" to stationary position. f

'Othe objeetsof t e'iirivention will appear 7 from the following d In carrying: the eflect l a. r pti'on and append- Jvationo i provide work-clamp mechanism, preferably,-

3 of the type disclosed in the Sullivan patent, v

withmeans, whereby impart jogging movements to the clalmplab,

the connections which of the looper shaft may be. render-ed ineffective, and I combine such work-clamp mechanism with stitch-forming mechanism preferably of the chain-stitch type such as disclosed in'my Patent NO.1,14:7386" issued July 20, 1915, in which a looper isimounted on a rotating shaftextending longitudinally V of themachlne-bed,

ogging movements ofthe work-clamp I pre parts hinged; together. One -ofthese 'parts, 1s" conne c normally disposed within a double; walled cam-slot designed to'move ,the' 1ever t'oandir y A'manually controlled shaft "carryingyan.

; eccentric is ournaled on onepart 'oflthe lever and a link embracing said eccentrlc 1s connected 'to' the other part of the lever. Partial rotation of the eccentric will withdraw the cam-roll from the actuatlng cain and .force the p rse: the leverv carrying the cam-roll into engagement with a fixed stop which is provide with means acting to "shift the lever to a predetermined position,

' v the eyes preferably intermediate 1 the extremes of its to-and-fro movement, so. that when a two-;.

hole button -is ;placed in. the work-holder,

may properlyregister with the needIeL-A form a part of this specification, Figure l I is a 'sideelevati'on-of-a buttonlnsewing chine embodying myinvention.

2 is a perspective -view of the work-clamp and operatin clamp in I plan Views, partly in section, of the discon- 'necti'ng means for the work-clamp mechanism. Fig. 6 isja side viewof the disconnecti'ng means. Figs. -7 and 8 are reverse side views of thesam'e in active and disconnected positions, ,respectively;

v vention,

hollow 'standard 2. "aided with the overhanging tubular portion} "termina'ting'in the head 4 in which 'is Infth'e [preferred embodiment of the incomp'risese base 1 from which rises theof the bracket-arm projournaled the reclprocating needle-bar 5 carrying-the needle 6 a well-known form of mainfsu n a h rotating chain- 'sftitch looper having a beak 7 -and'a' loop spreadin wing 8. The looper is mounted 1%: 9 extending longitudinally of an' overhanging .wvork-a'rm 10 which joins the porting portionof the frame. Lplfe or to employ t e looper operating mechanism, fully disclosi I" in my said patent ments, bodily lateral To" arrest the side/wise:

shifted; .lever having two to Work-clamp. and theothery carriesja-fcam roll work clamp I prefe prise the vertical -usua l slide block (not mechanism. F ig.. 3 is'an enjd ele-,- the cooperating stitch-forming elements showing the bed-plate and worktransversely of the bar crossfsection. Figs. 4 and 5 are tuating element or cam-wheel 22 screw-23 was commonly shifted No. 1,147,386, in in addition to its normal loop seizing moveloop'detaining spur 11 on the opposite side of the needle-beak from the loop spreading portion of the looper in its loop-seizing stage {of movement, thereby insuring the positioning of theneedle-th'read loops uniformly for successive stitch-forming cycle's'regard-. i in which the work is less of the direction The work-clamp is of the" well-known form comprising the jogging bar 12 to the. forward end W supporting plate '13 upon which meets the of which is secured the fa'bric button-clamp comprising the button ping jaws. 14, "14 pressed. arm mounted on the rearward end of the i To impart longitudinal movements to the ra'bly employ the usual gripcarrled by the springactuating connections such as shown in the .Theseconnections com- 7 post 17 rigidly sustained by the rearwardend .of the bar 12 and c1n- Sullivan patent.

braced by a' slotted arm 18 .of a rock-lever fulcrumed at .19. The other arm 20 of the rock-lever'carries a roller 21 which enters a 'suitab'le cam-slot in the inner face of the usual cam-wheel 22 actuated', in a manner Well-known, by the' main-shaft of the ma a i v r chine. In the accompanying drawings" which "The adjusting screw 23 is carried by the adapted to be secured lIl'Vzll'lOllS positions amplitude of the longitudinal jogging movements of the work-holder.

cting on the work-holder in a direction train of mechanism comprising the slideplate' 24 secured to the bar 12 by dowelpins 25 and a screw 26 and carrying the extending pin 27 connected by link 27 fulcrumed -on a work-arm 10. The other {11'11130 of the bellcrank-lever is slotted pin 31 connected to one connected to the lower end of an actuated. member orlever fulcrlnned on the trans-, verse pin 3 34'rigidly held in a' socket formed frame.

Heretofore,iit has been customary to pro- 'vide the upper end of the lever 33 with a cam roll in permanent engagement with 36 in the outer face of the acand when adjusting upwardly the rock-shaft 1.), idle v the rocking movesewing on twodiole buttons the into alinement with thereby rendering 15 secured'upon-the block 16 bur to receive a headed end of an adjustable link 32 whose opposite ei'id is freely which the looper I Jogging movements so.- asto carry the'needle-thread loops retained by the looper into engagement with a fixed I of adjustment on the post 17 to vary the 12 is the \vell-lmmvn to onearm 28 of a 'bellcrank-lever pin 29sustained by the permits endis 'ap ertured to receive the reduced exmerits of the slotted lever-arm 18 while permitting the cam-slot 36 to impart lateral jogging movements to the work'holder.

In attempting to sew on two-hole but tons with a-chain stitchmachine it is found that when the work is jogged lateral-1y of the looper-shaft, the limbs of the distended arranged to hold the, work cl'amp in fixed position laterallvof the looper-shaft while permitting it'to be jogw longitudinally thereof. To this end 'provision is made for disconnecting the lever 33" from the camslot 36 and as a convenient means for accomplishing this result I have formed the lever 33 with a movable follower-element 38 pivoted on a pin, 38 secured to the lever 33 and'extending transversely of the fulcrumpin 34. The follower element 38 is formed with the two cheek pieces 38, engag ng opposite sides of the tongue 33* constitutin the upper end-portion of the lever 33, an

which it may be shifted.

carries a" laterally extending pin. 39 on which 'jisxjonrnaled a roller 40 adapted to enter the cam-slot 36.. Y

Secured to the tongue 33 by a screw 41 is one 'end of; a short link 42 whose oppo-" site enlarged end'embraces the eccentric 43 fixed to one end of a shaft 44 journaled in" the follower-element-38. "A handle 45, se-

curedflto the opposite end of the shaft 44,

the eccentric 43 arranged to press upwardly on the en arged end of the link to' urge the'ecc'entric 43 .towardeither of the extreme posit ons to- When' the lever 33 is disengaged from the cam-slot 36 it is' desirable to hold'it in fi'xed Eosition' intermediate the extremes o f itsyi rator'y movement. e a. vertical guide-'pin'41" on top' 'of the hinged follower-element which,

i For this'purposel pre ferably mount I when shifted outwardly, carries the .pin' 41 tremity. t r thejrotatin 'intofthe cam-slot 47' formed in the overhangin "upper; end ,of a stationary stopselement j 1 -01 to-the fulcrum-fin; Secured to the upper ar.48 whose; lower end is rigidly secured end-portionoi the bar 48 by a screw-bolt 749 issue endof the bar 50 whoseopposite shaft which '9- portsthecam wheelfii he element 38to- 'geth'er with the pin-41*.and the cani rolljfic may be. considered a. follower which s acted .upo'n by-the cam-slots 36 and 37.. 2

The-open sortion or the, cam-slot 47 is'infIli'ne with the uide-pi 41*, as shown "inFig i, preferablywh'en the-iupfper end of the, lever is at an extremity o "to be understood that the present im rove .w'orkholder, means' for 'intoIengagement w'ithsaidstogj,

, movements of said work to be'turned to". -1nove the roller40 into or out oi engage: ment with the cam-slot '36. A spring 46 is V V stop, and meaiisfor -shiftin' msaid 011w tion of movementj as,

" 3. A button-s its vibra stop, and means tory movement. As the guide-pin 41* is shifted into the cam-slot47 it strikes the inclined end-porti0n 5:2 of said cam-slot and is shifted to the right, Fig. 5, thus moving the lever 33 sufiiciently to shift the workclamp to a position half-way between the eXtreIries of its jogging movement. Anodjustable screw andloclcnu't 54 a'reprovided to limit the outward. movement of the follower-element 38 under the influence of the eccentric 43. v While I have described in detail the preferr'ed embodimentoftheinvention, it is' ment is not limited to the details 0 construction illustrated but may he greatly modified within the seope of the invention which, in certain aspects,-is not limited to a j chain-stitch machine.

1 Having thus set forth the nature of the invention, what I claim herein is i 1. A button-sewing machine comprising, in. combination, a reciprocating needle, a I r'oduoing jo gi'ng movements ofsaid'workolder la'tera ly of said needle,i said means includin 'an actuatmg element and a follower norma 1y actuated. by said actuatin elementya stationaryst'op and means for s ifting said follower'outo engagement withlsaid actuatingelement and 2. A button-sewing machine, comprising, in combination, a reciprocating-,needle,a work-holder, means for groducing .jo g l-l'ig y older'laterafiy o said needle, said means includin'gjan'actuatw mg element and a followerjnorma lly actuaatedby said actuating element, a stationa out of 'engagementfw-ithf actuating 'el' ment and into engagementt'withsaidstop 'in a direction transverseto its normaldiriem,

atingielemrit'.

as iti s r in communi n wintering-s m for Sl'llftlllQfifiid to lower into or. out. o f enfl 'gagementwith said actuating elementr',

4- A b t n-sewing machine comprieing,'

'COIIlblIliLfiOIj, a, a I "workihold'et means for lPg g the Work holder, said means comprising indefindyenflyi acting mechanisms ('iperating ont e work holder in mutually transverse directions, one

.of said'mechifiiisms including'an actuatin element, afollotver normallymoved to-an .fro by, said actuating. element,'-ia stationary for'shifting said follower -ment and into engagement 'with said stop.

. 5. Wrk-holder mechanism for sewing machines, comprising, in"'combination, a

work-holder, means for joggingth'e work holder, said means comprising independently acting mechanisms Operating on the workholder in mutually transversedirections, one

of said mechanisms including-an actuating cam, a cam-follower normally moved to-andfro by said actuating cam, and, means for shifting said follower into, or out of engage- 1 ment'with said actuating cam.

(5. \Vork-holder mechanism for sewing machines, comprising, in comb1n'at|on, a

wm'k-holder, a cam-follmver connected to.

said work-holder, an actu'atingcam' adapted to impart to-and-fro morenients to said camfollower, a stationary stop, andmeans for shifting said follower out of engagement \vlthsaid actuating cam and. into engage ment with said stop.

hold-said follower in tio'n.

7. \Vorkh'older mechanism for sewing machines comprising, in combination, a work-,l'lolder, a cam-follower connected to said work-holder, a cam. adapfedto actuate 'sai'd cam;to1lo\\'e.r,.. a. stationary stop, andmeans for shifting said follower .outljofengagement with said at'tuatingcam. and into engagement with said stop, said stop, and follower having coacting meansadapted to -8. 'ork-holdm' mechanism tor sewing mach nes comprising, in comhmation, a worleholder, a ram-follower connected to said '\\"orl\'--h'older, a -cam adapted to actuate I said cam-follower, a stationary stop, and

means for shifting said follower outot en 'gagement wlth saul acluatmg cam and 111110 engagement with said stop,said stop'aml followerhaving coactmg surfaces adapted to more said wm'k-holder to a position: intermediate the extremes of Its op'erat-Wemovements as said follower is shifted to sta-"' tionary position.

2!). \"ork-holdcr i'nechanism for-sewing -machines rennin-mug. in combination, a

worl eholder, a. -camstollowei"' connected 'to saidivor-leholder, a-ca'm adapted to actuate said cam-follower, a stationary stop-formed w.ith a slot and means for slnftmg sa d camfollt'nienou-t of engagement withsaid actuating cam and into. engagement with said machines" comprising, in combination, a

follower, a stati( mar stopfor'lmi'd with'a cam-slot havin an inclined portion, and means for shitting saidcamtollo\\'er out of engagement-with said actuating ("am and holder, in mutually a predetermined posi l0. Wm'k-holdcr mechanism for sewing.

the inclined portion cam-follower, a stationary stop formed with a cam:slo .t having an inclined portion, and t an'ad ustable stop for limiting the'move-f' ment of said cam-follower when shifted'into b said inclined portion.

12. York-holder mechanism for sewing machines coi nprisi m in" combination, a work-holder, and independently acting vibratory mechanisms operating oil the work- 3 transverse directions, each of said mcclmnisms including adjustable. means t'or arresting its Vibratory'inotion while permitting continued motion of the other ]ll0(ll2llllS1ll.-

13, \Vo1'l -liolder njlechanisni for sewing machines comprising. in. combination, a work-holder, actuating means therefor, independently acting' vibratory mechanisms connecting said work-clamp with said jactuating means and operating on the workholder iirmutually transverse directions, adjnsting means for rendering ()l1t.' 0f said mechanisms inetl'ecti re, shift'ahle means for disconnecting anotherof said mechanisms-' from its actuating.means, and means for holding said last-.nientionetl inei lnn'iism in fixed position when disconnected from its actuating means.

1-L'A sivl-lgle-thread; lmtton sewing machine comprisingin 'eomhimltion, a frame.

including abed-plate and an ore-rhanging hracketmrin', a reciprocating needle mounted in said bracket-arm.- a rotating looper, -a

'shat't carrvingsa'id looper .and extendinglongitudinally of and 'lltlOW said l,i ed'-plate.,

a work-clamp disposed lon'gitudinallj of and above said hed-plate, means for. imparting simultaneous lateral and longitudinaljoging nim'ements to'said work-clamp, where A b'litton-sewing machine comprising, 1n rombmation,

V .a' reci'fn'ocating needle. a work-holder, means for producing relativehiteral :joggm 'niovements between said needle'an '\\'or -h older, said means inelud-- inga'n actuating elementimda follower nors madly actuated by said actuatingelement, a stationary stop", and means for shifting said follower oiltof engagementwv'ith said 1 5 actuating element and ntoengagcment withsald stop.

16. 'A button-sewing 'maeh ine comprising,

in conibinntion, stitch-forming mechanism including-a recipr'ocating needle, :1. wo'rkholder, means fbr producing relative lateral jogging movements, of said "stitch-forming mechanism "and work-holder, said means comprising independently 'acting mechanisms operatin in mutually transverse directions, one a? said mechanisms including an actuating cam, a cam-follower normally moved tO-and-fro by said actuating cam, and 10 means for shifting said follower into or out of engagement with said actuating cam.

In testimony whereof, I have signed my namcto this specification.

ALBERT F. FIFIELD. 

